Threshold effect and π^\pm ψ(2S) peak

Abstract

A resonance-like structure in the ${\pi }^{\pm }\psi (2S)$ mass spectrum arising in $B\to K{\pi }^{\pm }\psi (2S)$ has recently been reported. It is noted that the mass of this structure, $4433\pm 4\pm 1$ MeV, is not far from the threshold for production of $D^{\ast }{\bar{D}}_1(2420)$. A proposed mechanism for production of this state is suggested, and tests are suggested.

4 pages, 1 figure. To be submitted to Phys. Rev. D (Brief Reports). Additional text, acknowledgment, references; note added on other work

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Cited by in corpus (47)

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• Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States-
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• The Exotic XYZ Charmonium-like Mesons
• How to reveal the exotic nature of the P_c(4450)
• Are Y(4260) and {\rm Z${}_2^{+}$(4250)} ${\mathrm{D}}_1\mathrm{D}$ or ${\mathrm{D}}_0{\mathrm{D}}^{\ast }$ Hadronic Molecules?
• Is X(3872) {\sl Really} a Molecular State?
• Search for the Z(4430)^- at BABAR
• An overview of $XYZ$ new particles
• QCD Sum Rules Approach to the $X,Y$ and $Z$ States
• Is Z^+(4430) a loosely bound molecular state?
• A case for hidden $b\bar{b}$ tetraquarks based on $e^{+}{e}^{-}\to b\bar{b}$ cross section between $\sqrt{s}=10.54$ and 11.20 GeV
• Analysis of the $Z(4430)$ as the first radial excitation of the $Z_c(3900)$
• $Z^{+}(4430)$ as a $D_1^{\prime }{D}^{\ast }$ ($D_1{D}^{\ast }$) molecular state
• Search for tetraquark candidate Z(4430) in meson photoproduction
• $\{Q\bar{q}\}\{{\bar{Q}}^{{(}^{\prime })}q\}$ molecular states
• Treating $Z_c(3900)$ and $Z(4430)$ as the ground-state and first radially excited tetraquarks
• A Uniform Description of the States Recently Observed at B-factories
• $\{Q\bar{s}\}\{{\bar{Q}}^{{(}^{\prime })}s\}$ molecular states in QCD sum rules
• Charged charmonium-like Z+(4430) from rescattering in conventional B decays
• A model-independent confirmation of the $Z(4430{)}^{-}$ state
• The meson $Z^{+}(4430)$ as a tetraquark state
• The bound state problem of S-wave heavy quark meson-aitimeson systems
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• Low-energy $D^{\ast +}{D}_1^0$ Scattering and the Resonance-like Structure $Z^{+}(4430)$
• Partners of Z(4430) and Productions in B Decays
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• Line Shapes of the Z(4430)
• Mass spectrum of the axial-vector hidden charmed and hidden bottom tetraquark states
• $Z_c(4430)$ and $Z_c(4200)$ as triangle singularities
• Possible tetraquark states in the ${\pi }^{+}{\chi }_{c1}$ invariant mass distribution
• Study of $X_c(3250)$ as a $D_0^{\ast }(2400)N$ molecular state
• The two-body open charm decays of $Z^{+}(4430)$
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• Recoupling Mechanism for exotic mesons and baryons
• New molecular candidates: X(1910), X(2200), and X(2350)
• Charged charmonium-like states as rescattering effects in B -> D_sJ D^(*) decays
• The signal of $Z^{\pm }(4430)$ in nucleon-antinucleon scattering
• Microscopic calculation of the decay of Jaffe-Wilczek tetraquarks, and the Z(4433)
• The possibility of Z(4430) resonance structure description in $\pi {\psi }^{\prime }$ reaction
• Diquark-Antidiquark Interpretation of Mesons
• Exotic mesons: status and future
• Determination of the Quark Content of Scalar Mesons Using Hydrodynamical Flow in Heavy Ion Collisions